﻿382 
  On 
  new 
  African 
  Muridse. 
  

  

  group, 
  in 
  fact 
  (jiiite 
  like 
  Elgon 
  specimens 
  referred 
  to 
  T. 
  ihennua 
  

   except 
  that 
  the 
  ears 
  are 
  smaller. 
  Head 
  and 
  anterior 
  half 
  of 
  

   body 
  lined 
  olive-grey, 
  posterior 
  half 
  passing 
  into 
  dull 
  tawny 
  

   ochraceous. 
  Under 
  surface 
  sharply 
  defined 
  pure 
  white, 
  a 
  

   very 
  narrow 
  buffy 
  edging 
  along 
  the 
  posterior 
  part 
  of 
  the 
  line 
  

   of 
  demarcation. 
  Ears 
  rather 
  small, 
  coloured 
  like 
  the 
  head. 
  

   Hands 
  and 
  feet 
  pale 
  buffy. 
  Tail 
  as 
  usual 
  long, 
  well-haired, 
  

   and 
  slightly 
  pencilled 
  terminally, 
  brown 
  above 
  and 
  at 
  the 
  

   end, 
  inconspicuously 
  lighter 
  below 
  proximally, 
  where 
  the 
  hairs 
  

   are 
  dull 
  buffy 
  except 
  along 
  the 
  centre, 
  where 
  they 
  form 
  a 
  

   slightly 
  darker 
  median 
  line. 
  

  

  Skull 
  rather 
  longer 
  than 
  that 
  of 
  macmiUani, 
  but 
  with 
  even 
  

   smaller 
  bull*. 
  Anterior 
  palatine 
  foramina 
  comparatively 
  

   short, 
  not 
  reaching 
  back 
  even 
  to 
  the 
  level 
  of 
  the 
  front 
  of 
  the 
  

   root 
  of 
  nt 
  1 
  . 
  Teeth 
  very 
  small. 
  

  

  Dimensions 
  of 
  the 
  type 
  (measured 
  in 
  the 
  flesh) 
  : 
  — 
  

  

  Head 
  and 
  body 
  108 
  mm.; 
  tail 
  170 
  ; 
  hind 
  foot23'5; 
  ear 
  15. 
  

  

  Skull 
  : 
  greatest 
  length 
  29*3 
  ; 
  condylo-incisive 
  length 
  27 
  ; 
  

   zygomatic 
  breadth 
  14*2 
  j 
  nasals 
  11; 
  interorbital 
  breadth 
  4'5 
  ; 
  

   brain-case 
  breadth 
  12*8 
  ; 
  palatilar 
  length 
  12 
  ; 
  diastema 
  7'5 
  ; 
  

   palatal 
  foramina 
  6*1 
  ; 
  upper 
  molar 
  series 
  4*3. 
  

  

  Hab. 
  Gonyon, 
  Bassa, 
  Liberia. 
  

  

  Type. 
  Old 
  male. 
  Original 
  number 
  36. 
  Collected 
  29th 
  

   November, 
  1010, 
  by 
  R. 
  11. 
  Bunting. 
  

  

  This 
  Thamnomys 
  is 
  readily 
  distinguishable 
  from 
  other 
  

   members 
  of 
  the 
  genus 
  by 
  its 
  size, 
  small 
  teeth, 
  small 
  bullae, 
  

   and 
  short 
  palatal 
  foramina. 
  It 
  is 
  the 
  first 
  of 
  this 
  group 
  of 
  

   Thamnomys 
  to 
  be 
  discovered 
  in 
  West 
  Africa, 
  the 
  previously 
  

   known 
  species 
  ranging 
  from 
  Abyssinia 
  to 
  the 
  Cape. 
  

  

  I 
  have 
  named 
  it 
  after 
  Mr. 
  R. 
  H. 
  Bunting, 
  its 
  captor, 
  in 
  

   whose 
  collection 
  there 
  are 
  several 
  interesting 
  Liberian 
  species 
  

   not 
  previously 
  possessed 
  by 
  the 
  Museum, 
  such 
  as 
  u 
  Mus" 
  

   triviryatus, 
  Temm., 
  Epimys 
  defua, 
  Mill., 
  Dasymys 
  rufulus, 
  

   Mill., 
  and 
  Malacomys 
  edwardsi, 
  Rochebr. 
  

  

  Typomys, 
  gen. 
  nov. 
  

  

  External 
  characters 
  as 
  in 
  Hybomys, 
  except 
  for 
  the 
  three- 
  

   striped 
  instead 
  of 
  one-striped 
  pattern 
  of 
  coloration. 
  Mammge 
  

   — 
  2 
  = 
  4, 
  these 
  varying 
  in 
  Hybomys 
  from 
  — 
  2 
  = 
  4 
  to 
  

   1—2 
  = 
  6. 
  

  

  Skull 
  less 
  broad 
  than 
  in 
  Hybomys. 
  Brain-case 
  smaller, 
  

   muzzle 
  longer. 
  Anterior 
  zygoma-root 
  with 
  the 
  upper 
  bridge 
  

   over 
  the 
  foramen, 
  the 
  hinder 
  edge 
  of 
  the 
  zygomatic 
  plate, 
  and 
  

   the 
  front 
  half 
  of 
  in 
  1 
  all 
  in 
  one 
  straight 
  vertical 
  line 
  (in 
  Hy- 
  

   bomys 
  the 
  bridge 
  is 
  decidedly 
  anterior 
  to 
  the 
  hinder 
  edge 
  of 
  

  

  